Key Concepts In Biology Flashcards
Parts of an animal cell
Nucleus Cytoplasm Cell membrane Mitochondria Ribosomes
What does a Nucleus do
Controls the cells activities
What does cytoplasm do
Where chemical reactions take place
What does a cell membrane do
Controls what enters and leaves the cell
What does mitochondria do
Reactions for respiration take place
What do ribosomes do
Translation of genetic material
What does a cell wall do
Supports and strengthens the cell
What does a large vacuole do
support the cell
What do chloroplasts do
Where photosynthesis takes place
Parts of a bacterial cell
Chromosomal DNA Ribosomes Cell membrane Plasmid DNA Flagellum
What is chromosomal DNA used for
Controls the cells activities
What is plasmid DNA used for
Contains genes for things like drug resistance
What is flagellum used for
Helps the cell to move
What 3 specialised cells are there
Egg
Sperm
Ciliated epithelial
What are the main functions of an egg cell
To carry the female DNA and nourish the developing embryo in the early stages
What are the main functions of a sperm cell
Transport the males DNA to the females egg
Where are epithelial cells found
On the lining of organs
What do epithelial cells do
Move substances
What two factors damage the active site of an enzyme
Ph & temperature
What happens when an enzyme and substrate come into contact
The enzyme and substrate come into contact at the active site and combined together, this then forces the substrate to separate and create the products (e.g. Starch)
What’s the word equation for working out the image size on a microscope
Image size = magnification x real size
Parts of a plant cell
Nucleus Ribosomes Cytoplasm Chloroplast Large vacuole Cell membrane Cell wall Mitochondria
What does amylase break down?
Starch
What converts proteins into amino acids?
Proteases
